Encapsulated fragrance chemicals

ABSTRACT

A polymeric encapsulated fragrance is disclosed which is suitable for use in personal care and cleaning products. In a preferred embodiment of the invention the fragrance is encapsulated by a first polymer material to form a fragrance encapsulated polymer, the polymer encapsulated shell is then coated with a cationic polymer, preferably a cationic starch and guar.

FIELD OF THE INVENTION

[0001] The present invention relates to fragrance materials that areencapsulated with a polymeric material, the encapsulated fragrancematerials are further coated with a cationic polymer material. Theencapsulated fragrance materials are well suited for rinse-offapplications associated with personal care and cleaning products.

BACKGROUND OF THE INVENTION

[0002] Fragrance chemicals are used in numerous products to enhance theconsumer's enjoyment of a product. Fragrance chemicals are added toconsumer products such as laundry detergents, fabric softeners, soaps,detergents, personal care products, such as shampoos, body washes,deodorants and the like, as well as numerous other products.

[0003] In order to enhance the effectiveness of the fragrance materialsfor the user, various technologies have been employed to enhance thedelivery of the fragrance materials at the desired time. One widely usedtechnology is encapsulation of the fragrance material in a protectivecoating. Frequently the protective coating is a polymeric material. Thepolymeric material is used to protect the fragrance material fromevaporation, reaction, oxidation or otherwise dissipating prior to use.A brief overview of polymeric encapsulated fragrance materials isdisclosed in the following U.S. Patents: U.S. Pat. No. 4,081,384discloses a softener or anti-stat core coated by a polycondensatesuitable for use in a fabric conditioner; U.S. Pat. No. 5,112,688discloses selected fragrance materials having the proper volatility tobe coated by coacervation with micro particles in a wall that can beactivated for use in fabric conditioning; U.S. Pat. No. 5,145,842discloses a solid core of a fatty alcohol, ester, or other solid plus afragrance coated by an aminoplast shell; and U.S. Pat. No. 6,248,703discloses various agents including fragrance in an aminoplast shell thatis included in an extruded bar soap.

[0004] While encapsulation of fragrance in a polymeric shell can helpprevent fragrance degradation and loss, it is often not sufficient tosignificantly improve fragrance performance in consumer products.Therefore, methods of aiding the deposition of encapsulated fragranceshave been disclosed. U.S. Pat. No. 4,234,627 discloses a liquidfragrance coated with an aminoplast shell further coated by a waterinsoluble meltable cationic coating in order to improve the depositionof capsules from fabric conditioners. U.S. Pat. No. 6,194,375 disclosesthe use of hydrolyzed polyvinyl alcohol to aid deposition offragrance-polymer particles from wash products. U.S. Pat. No. 6,329,057discloses use of materials having free hydroxy groups or pendantcationic groups to aid in the deposition of fragranced solid particlesfrom consumer products.

[0005] Despite these and many other disclosures there is an ongoing needfor the improved delivery of fragrance materials for various rinse-offproducts that provide improved performance.

SUMMARY OF THE INVENTION

[0006] The present invention is directed to a polymer encapsulatedfragrance, the polymer encapsulated fragrance being further treated witha cationic polymer to improve deposition.

[0007] More specifically the present invention is directed to acomposition comprising:

[0008] A fragrance material; said fragrance material encapsulated by apolymer to create a polymer encapsulated fragrance; the polymerencapsulated fragrance being further coated by a cationic polymer. In apreferred embodiment of the invention the cationic polymer is selectedfrom the group consisting of cationic starch and cationic guar. A methodfor making the cationic coated polymer encapsulated fragrances is alsodisclosed.

[0009] The present invention is well suited for use in rinse offproducts, which are products that are applied to a substrate and thenremoved in some manner. Especially preferred products that use thecationic coated polymer encapsulated fragrance of the present inventioninclude, without limitation, hair and pet shampoos, hair conditioners,laundry detergents, fabric conditioners and the like. These and otherembodiments of the present invention will become apparent upon referringto the following figure and description of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0010] The fragrances suitable for use in this invention include withoutlimitation, any combination of fragrance, essential oil, plant extractor mixture thereof that is compatible with, and capable of beingencapsulated by, a polymer.

[0011] Many types of fragrances can be employed in the presentinvention, the only limitation being the compatibility and ability to beencapsulated by the polymer being employed, and comparability with theencapsulation process used. Suitable fragrances include but are notlimited to fruits such as almond, apple, cherry, grape, pear, pineapple,orange, strawberry, raspberry; musk, flower scents such aslavender-like, rose-like, iris-like, and carnation-like. Other pleasantscents include herbal scents such as rosemary, thyme, and sage; andwoodland scents derived from pine, spruce and other forest smells.Fragrances may also be derived from various oils, such as essentialoils, or from plant materials such as peppermint, spearmint and thelike. Other familiar and popular smells can also be employed such asbaby powder, popcorn, pizza, cotton candy and the like in the presentinvention.

[0012] A list of suitable fragrances is provided in U.S. Pat. Nos.4,534,891, 5,112,688 and 5,145,842. Another source of suitablefragrances is found in Perfumes Cosmetics and Soaps, Second Edition,edited by W. A. Poucher, 1959. Among the fragrances provided in thistreatise are acacia, cassie, chypre, cylamen, fern, gardenia, hawthorn,heliotrope, honeysuckle, hyacinth, jasmine, lilac, lily, magnolia,mimosa, narcissus, freshly-cut hay, orange blossom, orchids, reseda,sweet pea, trefle, tuberose, vanilla, violet, wallflower, and the like.

[0013] As used herein olfactory effective amount is understood to meanthe amount of compound in perfume- compositions the individual componentwill contribute to its particular olfactory characteristics, but theolfactory effect of the fragrance composition will be the sum of theeffects of each of the fragrance ingredients. Thus the compounds of theinvention can be used to alter the aroma characteristics of the perfumecomposition by modifying the olfactory reaction contributed by anotheringredient in the composition. The amount will vary depending on manyfactors including other ingredients, their relative amounts and theeffect that is desired.

[0014] The level of fragrance in the cationic polymer coatedencapsulated fragrance varies from about 5 to about 95 weight percent,preferably from about 40 to about 95 and most preferably from about 50to about 90 weight percent on a dry basis. In addition to the fragranceother agents can be used in conjunction with the fragrance and areunderstood to be included.

[0015] As noted above, the fragrance may also be combined with a varietyof solvents which serve to increase the compatibility of the variousmaterials, increase the overall hydrophobicity of the blend, influencethe vapor pressure of the materials, or serve to structure the blend.Solvents performing these functions are well known in the art andinclude mineral oils, triglyceride oils, silicone oils, fats, waxes,fatty alcohols, diisodecyl adipate, and diethyl phthalate among others.

[0016] A common feature of many encapsulation processes is that theyrequire the fragrance material to be encapsulated to be dispersed inaqueous solutions of polymers, pre-condensates, surfactants, and thelike prior to formation of the capsule walls. Therefore, materialshaving low solubility in water, such as highly hydrophobic materials arepreferred, as they will tend to remain in the dispersed perfume phaseand partition only slightly into the aqueous solution. Fragrancematerials with Clog P values greater than 1, preferably greater than 3,and most preferably greater than 5 will thus result in micro-capsulesthat contain cores most similar to the original composition, and willhave less possibility of reacting with materials that form the capsuleshell.

[0017] One object of the present invention is to deposit capsulescontaining fragrance cores on desired substrates such as cloth, hair,and skin during washing and rinsing processes. Further, it is desiredthat, once deposited, the capsules release the encapsulated fragranceeither by diffusion through the capsule wall, via small cracks orimperfections in the capsule wall caused by drying, physical,. ormechanical means, or by large-scale rupture of the capsule wall. In eachof these cases, the volatility of the encapsulated perfume materials iscritical to both the speed and duration of release, which in turncontrol consumer perception. Thus, fragrance chemicals which have highervolatility as evidenced by normal boiling points of less than 250° C.,preferably less than about 225° C. are preferred in cases where quickrelease and impact of fragrance is desired. Conversely, fragrancechemicals that have lower volatility (boiling points greater than 225°C.) are preferred when a longer duration of aroma is desired. Of course,fragrance chemicals having varying volatility may be combined in anyproportions to achieve the desired speed and duration of perception.

[0018] In order to provide the highest fragrance impact from thefragrance encapsulated capsules deposited on the various substratesreferenced above, it is preferred that materials with a highodor-activity be used. Materials with high odor-activity can be detectedby sensory receptors at low concentrations in air, thus providing highfragrance perception from low levels of deposited capsules. Thisproperty must be balanced with the volatility as described above. Someof the principles mentioned above are disclosed in U.S. Pat. No.5,112,688.

[0019] Further, it is clear that materials other than fragrances may beemployed in the system described here. Examples of other materials whichmay be usefully deposited from rinse-off products using the inventioninclude sunscreens, softening agents, insect repellents, and fabricconditioners, among others.

[0020] Encapsulation of fragrances is known in the art, see for exampleU.S. Pat. Nos. 2,800,457, 3,870,542, 3,516,941; 3,415,758, 3,041,288,5,112,688, 6,329,057, and 6,261,483. Another discussion of fragranceencapsulation is found in the Kirk-Othmer Encyclopedia.

[0021] Preferred encapsulating polymers include those formed frommelamine-formaldehyde or urea-formaldehyde condensates, as well assimilar types of aminoplasts. Additionally, capsules made via the simpleor complex coacervation of gelatin are also preferred for use with thecoating. Capsules having shell walls comprised of polyurethane,polyamide, polyolefin, polysaccaharide, protein, silicone, lipid,modified cellulose, gums, polyacrylate, polyphosphazines, polystyrene,and polyesters or combinations of these materials are also functional.

[0022] A representative process used for aminoplast encapsulation isdisclosed in U.S. Pat. No. 3,516,941 though it is recognized that manyvariations with regard to materials and process steps are possible. Arepresentative process used for gelatin encapsulation is disclosed inU.S. Pat. No, 2,800,457 though it is recognized that many variationswith regard to materials and process steps are possible. Both of theseprocesses are discussed in the context of fragrance encapsulation foruse in consumer products in U.S. Pat. Nos. 4,145,184 and 5,112,688respectively.

[0023] Well known materials such as solvents, surfactants, emulsifiers,and the like can be used in addition to the polymers described above toencapsulate the fragrance without departing from the scope of thepresent invention. It is understood that the term encapsulated is meantto mean that the fragrance material is substantially covered in itsentirety. Encapsulation can provide pore vacancies or interstitialopenings depending on the encapsulation techniques employed. Morepreferably the entire fragrance material portion of the presentinvention is encapsulated.

[0024] Particles comprised of fragrance and a variety of polymeric andnon-polymeric matrixing materials are also suitable for use. These maybe composed of polymers such as polyethylene, fats, waxes, or a varietyof other suitable materials. Essentially any capsule, particle, or.dispersed droplet may be used that is reasonably stable in theapplication and release of fragrance at an appropriate time oncedeposited.

[0025] Particle and capsule diameter can vary from about 10 nanometersto about 1000 microns, preferably from about 50 nanometers to about 100microns and is most preferably from about 2 to about 15 microns. Thecapsule distribution can be narrow, broad, or multi-modal. Each modal ofthe multi-modal distributions may be composed of a different type ofcapsule chemistry.

[0026] Once the fragrance material is encapsulated a cationicallycharged water-soluble polymer is applied to the fragrance encapsulatedpolymer. This water-soluble polymer can also be an amphoteric polymerwith a ratio of cationic and anionic functionalities resulting in a nettotal charge of zero and positive, i.e., cationic. Those skilled in theart would appreciate that the charge of these polymers can be adjustedby changing the pH, depending on the product in which this technology isto be used. Any suitable method for coating the cationically chargedmaterials onto the encapsulated fragrance materials can be used. Thenature of suitable cationically charged polymers for assisted capsuledelivery to interfaces depends on the compatibility with the capsulewall chemistry since there has to be some association to the capsulewall. This association can be through physical interactions, such ashydrogen bonding, ionic interactions, hydrophobic interactions, electrontransfer interactions or, alternatively, the polymer coating could bechemically (covalently) grafted to the capsule or particle surface.Chemical modification of the capsule or particle surface is another wayto optimize anchoring of the polymer coating to capsule or particlesurface. Furthermore, the capsule and the polymer need to want to go tothe desired interface and, therefore, need to be compatible with thechemistry (polarity, for instance) of that interface. Therefore,depending on which capsule chemistry and interface (e.g., cotton,polyester, hair, skin, wool) is used the cationic polymer can beselected from one or more polymers with an overall zero (amphoteric:mixture of cationic and anionic functional groups) or net positivecharge, based on the following polymer backbones: polysaccharides,polypeptides, polycarbonates, polyesters, polyolefinic (vinyl, acrylic,acrylamide, poly diene), polyester, polyether, polyurethane,polyoxazoline, polyamine, silicone, polyphosphazine, olyaromatic, polyheterocyclic, or polyionene, with molecular weight (MW) ranging fromabout 1,000 to about 1000,000,000, preferably from about 5,000 to about10,000,000. As used herein molecular weight is provided as weightaverage molecular weight. Optionally, these cationic polymers can beused in combination with nonionic and anionic polymers and surfactants,possibly through coacervate formation.

[0027] A more detailed list of cationic polymers that can be used tocoat the encapsulated fragrance is provided below:

[0028] Polysaccharides include but are not limited to guar, alginates,starch, xanthan, chitosan, cellulose, dextrans, arabic gum, carrageenan,hyaluronates. These polysaccharides can be employed with:

[0029] (a) cationic modification and alkoxy-cationic modifications, suchas cationic hydroxyethyl, cationic hydroxy propyl. For example, cationicreagents of choice are 3-chloro-2-hydroxypropyl trimethylammoniumchloride or its epoxy version. Another example is graft-copolymers ofpolyDADMAC on cellulose like in Celquat L-200 (Polyquaternium-4),Polyquaternium-10 and Polyquaternium-24, commercially available fromNational Starch, Bridgewater, N.J.;

[0030] (b) aldehyde, carboxyl, succinate, acetate, alkyl, amide,sulfonate, ethoxy, propoxy, butoxy, and combinations of thesefunctionalities. Any combination of Amylose and Amylopectin and overallmolecular weight of the polysaccharide; and

[0031] (c) any hydrophobic modification (compared to the polarity of thepolysaccharide backbone).

[0032] The above modifications described in (a), (b) and (c) can be inany ratio and the degree of functionalization up to completesubstitution of all functionalizable groups, and as long as thetheoretical net charge-of the polymer is zero (mixture of cationic andanionic functional groups) or preferably positive. Furthermore, up to 5different types of functional groups may be attached to thepolysaccharides. Also, polymer graft chains may be differently modifiedthan the backbone. The counterions can be any halide ion or organiccounter ion. U.S. Pat. Nos. 6,297,203 and U.S. Pat. No. 6,200,554.

[0033] Another source of cationic polymers contain protonatable aminegroups so that the overall net charge is zero (amphoteric: mixture ofcationic and anionic functional groups) or positive. The pH during usewill determine the overall net charge of the polymer. Examples are silkprotein, zein, gelatin, keratin, collagen and any polypeptide, such aspolylysine.

[0034] Further cationic polymers include poly vinyl polymers, with up to5 different types of monomers, having the monomer generic formula —C(R2)(R2)-CR2R3-. Any co-monomer from the types listed in this specificationmay also be used. The overall polymer will have a net theoreticalpositive charge or equal to zero (mixture of cationic and anionicfunctional groups). Where R1 is any alkanes from C1-C25 or H; the numberof double bonds ranges from 0-5. Furthermore, R1 can be an alkoxylatedfatty alcohol with any alkoxy carbon-length, number of alkoxy groups andC1-C25 alkyl chain length. R1 can also be a liquid crystalline moietythat can render the polymer thermotropic liquid crystalline properties,or the alkanes selected can result in side-chain melting. In the aboveformula R2 is H or CH3; and R3 is —Cl, —NH2 (i.e., poly vinyl amine orits copolymers with N-vinyl formamide. These are sold under the nameLupamin 9095 by BASF Corporation), —NHR1, —NR1R2, —NR1R2 R6 (whereR6═R1, R2, or —CH2—COOH or its salt), —NH—C(O)—H, —C(O)—NH2 (amide),—C(O)—N(R2)(R2′)(R2″), —OH, styrene. sulfonate, pyridine,pyridine-N-oxide, quaternized pyridine, imidazolinium halide,imidazolium halide, imidazol, piperidine, pyrrolidone, alkyl-substitutedpyrrolidone, caprolactam or pyridine, phenyl-R4 or naphthalene-R5 whereR4 and R5 are R1, R2, R3, sulfonic acid or its alkali salt —COOH, —COO—alkali salt, ethoxy sulphate or any other organic counter ion. Anymixture or these R3 groups may be used. Further suitable cationicpolymers containing hydroxy alkyl vinyl amine units, as disclosed inU.S. Pat. No 6,057,404.

[0035] Another class of materials are polyacrylates, with up to 5different types of monomers, having the monomer generic formula:—CH(R1)—C(R2) (CO—R3—R4)—. Any co-monomer from the types listed in thisspecification may also be used. The overall polymer will have a nettheoretical positive charge or equal to zero (mixture of cationic andanionic functional groups). In the above formula R1 is any alkane fromC1-C25 or H with number of double bonds from 0-5,aromatic moieties,polysiloxane, or mixtures thereof. Furthermore, R1 can be an alkoxylatedfatty alcohol with any alkoxy carbon-length, number of alkoxy groups andC1-C25 alkyl chain length. R1 can also be a liquid crystalline moietythat can render the polymer thermotropic liquid crystalline properties,or the alkanes selected can result in side-chain melting. R2 is H orCH3; R3 is alkyl alcohol C1-25 or an alkylene oxide with any number ofdouble bonds, or R3 may be absent such that the C═O bond is (via theC-atom) directly connected to R4. R4 can be: —NH2, NHR1, —NR1R2, —NR1R2R6 (where R6═R1, R2, or —CH2-COOH or its salt), —NH—C(O)—, sulfobetaine, betaine, polyethylene oxide, poly(ethyleneoxide/propyleneoxide/butylene oxide) grafts with any end group, H, OH, styrenesulfonate, pyridine, quaternized pyridine, alkyl-substituted pyrrolidoneor pyridine, pyridine-N-oxide, imidazolinium halide, imidazolium halide,imidazol, piperidine, —OR1, —OH, —COOH alkali salt, sulfonate, ethoxysulphate, pyrrolidone, caprolactam, phenyl-R4 or naphthalene-R5 where R4and R5 are R1, R2, R3, sulfonic acid or its alkali salt or organiccounter ion. Any mixture or these R3 groups may be used. Also,glyoxylated cationic polyacrylamides can be used. Typical polymers ofchoice are those containing the cationic monomer dimethylaminoethylmethacrylate (DMAEMA) or methacrylamidopropyl trimethyl ammoniumchloride (MAPTAC). DMAEMA can be found in Gafquat and Gaffix VC-713polymers from ISP. MAPTAC can be found in BASF's Luviquat PQ11 PN andISP's Gafquat HS100.

[0036] Another group of polymers that can be used are those that containcationic groups in the main chain or backbone. Included in this groupare:

[0037] (1) polyalkylene imines such as polyethylene imine, commerciallyavailable as Lupasol from BASF. Any molecular weight and any degree ofcrosslinking of this polymer can be used in the present invention;

[0038] (2) ionenes having the general formula set forth as—[N(+)R1R2-A1-N(R5)-X—N(R6)-A2-N(+)R3R4-A3 ]n— 2Z—, as disclosed in U.S.Pat. Nos. 4,395,541 and U.S. Pat. No. 4,597,962;

[0039] (3) adipic acid/dimethyl amino hydroxypropyl diethylene triaminecopolymers, such as Cartaretin F-4 and F-23, commercially available fromSandoz;

[0040] (4) polymers of the generalformula—[N(CH3)2-(CH2)x—NH—(CO)—NH—(CH2)y—N(CH3)2)-(CH2)z—O—(CH2)p]n—,with x, y, z, p=1-12, and n according to the molecular weightrequirements. Examples are Polyquaternium 2 (Mirapol A-15),Polyquaternium-17 (Mirapol AD-1), and Polyquaternium-18 (Mirapol AZ-1).

[0041] Other polymers include cationic polysiloxanes and cationicpolysiloxanes with carbon-based grafts with a net theoretical positivecharge or equal to zero (mixture of cationic and anionic functionalgroups). This includes cationic end-group functionalized silicones (i.e.Polyquaternium-80). Silicones with general structure:—[—Si(R1)(R2)-O—]x—[Si(R3)(R2)-O—]y— where R1 is any alkane from C1-C25or H with number of double bonds from 0-5,aromatic moieties,polysiloxane grafts, or mixtures thereof. Rl can also be a liquidcrystalline moiety that can render the polymer thermotropic liquidcrystalline properties, or the alkanes selected can result in side-chainmelting. R2 can be H or CH3 and R3 can be —R1-R4, where R4 can be —NH2,—NHR1, —NR1R2, —NR1R2R6 (where R6═R1, R2, or —CH2-COOH or its salt),—NH—C(O)—, —COOH, —COO— alkali salt, any C1-25 alcohol, —C(O)—NH2(amide), —C(O)— N(R2)(R2′)(R2″), sulfo betaine, betaine, polyethyleneoxide, poly(ethyleneoxide/propylene oxide/butylene oxide) grafts withany end group, H, —OH, styrene sulfonate, pyridine, quaternizedpyridine, alkyl-substituted pyrrolidone or pyridine, pyridine-N-oxide,imidazolinium halide, imidazolium halide, imidazol, piperidine,pyrrolidone, caprolactam, —COOH, —COO— alkali salt, sulfonate, ethoxysulphate phenyl-R5 or naphthalene-R6 where R5 and R6 are R1, R2, R3,sulfonic acid or its alkali salt or organic counter ion. R3 can also be—(CH2)x—O—CH2-CH(OH)—CH2-N(CH3)2-CH2-COOH and its salts. Any mixture ofthese R3 groups can be selected. X and y can be varied as long as thetheoretical net charge of the polymer is zero (amphoteric) or positive.In addition, polysiloxanes containing up to 5 different types ofmonomeric units may be used. Examples of suitable polysiloxanes arefound in U.S. Pat. Nos. 4,395,541 4,597,962 and U.S. Pat. No. 6,200,554.Another group of polymers that can be used to improve capsule/particledeposition are phospholipids that are modified with cationicpolysiloxanes. Examples of these polymers are found in U.S. Pat. No.5,849,313, WO Patent Application 9518096A1 and European PatentEP0737183B1.

[0042] Furthermore, copolymers of silicones and polysaccharides andproteins can be used (Crodasone Series).

[0043] Another class of polymers include polyethyleneoxide-co-propyleneoxide-co-butylene oxide polymers of any ethyleneoxide/propylene oxide/butylene oxide ratio with cationic groupsresulting in a net theoretical positive charge or equal to zero(amphoteric). The general structure is:

[0044] where R1,2,3,4 is —NH2, —N(R)3— X+, R with R being H or any alkylgroup. R5,6 is —CH3 or H. Counter ions can be any halide ion or organiccounter ion. X, Y, may be any integer, any distribution with an averageand a standard deviation and all 12 can be different. Examples of suchpolymers are the commercially available TETRONIC brand polymers.

[0045] Suitable polyheterocyclic (the different molecules appearing inthe backbone) polymers include the piperazine-alkylene main chaincopolymers disclosed in Ind. Eng. Chem. Fundam., (1986), 25, pp.120-125,by Isamu Kashiki and Akira Suzuki.

[0046] Also suitable for use in the present invention are copolymerscontaining monomers with cationic charge in the primary polymer chain.Up to 5 different types of monomers may be used. Any co-monomer from thetypes listed in this specification may also be used. Examples of suchpolymers are poly diallyl dimethyl ammonium halides (PolyDADMAC)copolymers of DADMAC with vinyl pyrrolidone, acrylamides, imidazoles,imidazolinium halides, etc. These polymers are discIosed in HenkelEP0327927A2 and PCT Patent Application 01/62376A1. Also suitable arePolyquaternium-6 (Merquat 100), Polyquaternium-7 (Merquats S, 550, and2200), Polyquaternium-22 (Merquats 280 and 295) and Polyquaternium-39(Merquat Plus 3330), available from Ondeo Nalco.

[0047] Polymers containing non-nitrogen cationic monomers of the generaltype —CH2—C(R1)(R2-R3-R4)— can be used with: R1 being a —H or C1-C20hydrocarbon. R2 is a disubstituted benzene ring or an ester, ether, oramide linkage. R3 is a C1-C20 hydrocarbon, preferably C1-C10, morepreferably C1-C4. R4 can be a trialkyl phosphonium, dialkyl sulfonium,or a benzopyrilium group, each with a halide counter ion. Alkyl groupsfor R4 are C1-C20 hydrocarbon, most preferably methyl and t-butyl. Thesemonomers can be copolymerized with up to 5 different types of monomers.Any co-monomer from the types listed in this specification may also beused.

[0048] Substantivity of these polymers may be further improved throughformulation with cationic, amphoteric and nonionic surfactants andemulsifiers, or by coacervate formation between surfactants and polymersor between different polymers. Combinations of polymeric systems(including those mentioned previously) may be used for this purpose aswell as those disclosed in EP1995/000400185.

[0049] Furthermore, polymerization of the monomers listed above into ablock, graft or star (with various arms) polymers can often increase thesubstantivity toward various surfaces. The monomers in the variousblocks, graft and arms can be selected from the various polymer classeslisted in this specification and the sources below:

[0050] Encyclopedia of Polymers and Thickeners for Cosmetics, RobertLochhead and William From, in Cosmetics & Toiletries, Vol. 108, May1993, pp. 95-138;

[0051]Modified Starches: Properties & Uses, O. B. Wurzburg, CRC Press,1986. Specifically, Chapters 3, 8, and 10;

[0052] U.S. Pat. Nos. 6,190,678 and 6,200,554; and

[0053] PCT Patent Application WO 01/62376A1 assigned to Henkel.

[0054] The preferred cationically charged materials are selected fromthe group consisting of cationically modified starch and cationicallymodified guar, polymers comprising poly diallyl dimethyl ammoniumhalides (PolyDADMAC), and copolymers of DADMAC with vinyl pyrrolidone,acrylamides, imidazoles, imidazolinium halides, and the like. Forinstance, Polyquaternium-6, 7, 22 and 39, all available from OndeoNalco.

[0055] The preferred cationic starch has a molecular weight of fromabout 100,000 to about 500,000,000, preferably from about 200,000 toabout 10,000,000 and most preferably from about 250,000 to about5,000,000. The preferred cationic starch products are HI-CAT CWS42 andHI-CAT 02 and are commercially available from ROQUETTE AMERICA, Inc.

[0056] The preferred cationic guar has a molecular weight of from about50,000 to about 5,000,000. The preferred cationic guar products areJaguar C-162 and Jaguar C-17 and are commercially available from RhodiaInc.

[0057] The level of cationic polymer is from about 1% to about 3000%,preferably from about 5% to about 1000% and most preferably from about10% to about 500% of the fragrance containing compositions, based on aratio with the fragrance on a dry basis.

[0058] The weight ratio of the encapsulating polymer to fragrance isfrom about 1:25 to about 1:1. Preferred products have had the weightratio of the encapsulating polymer to fragrance varying from about 1:10to about 4:96.

[0059] For example, if a capsule blend has 20 weight % fragrance and 20weight % polymer, the polymer ratio would be (20/20) multiplied by 100(%)=100%.

[0060] The present invention, the encapsulated fragrance is well suitedfor wash-off products. Wash-off products are understood to be thoseproducts that are applied for a given period of time and then areremoved. These products are common in areas such as laundry products,and include detergents, fabric conditioners, and the like; as well aspersonal care products which include shampoos, hair rinses, body washes,soaps and the like.

[0061] As described herein, the present invention is well suited for usein a variety of well-known consumer products such as laundry detergentand fabric softeners, liquid dish detergents, automatic dish detergents,as well as hair shampoos and conditioners. These products employsurfactant and emulsifying systems that are well known. For example,fabric softener systems are described in U.S. Pat. Nos. 6,335,315,5,674,832, 5,759,990, 5,877,145, 5,574,179; 5,562,849, 5,545,350,5,545,340, 5,411,671, 5,403,499, 5,288,417, 4,767,547, 4,424,134. Liquiddish detergents are described in U.S. Pat. Nos. 6,069,122 and 5,990,065;automatic dish detergent products are described in U.S. Pat. Nos.6,020,294, 6,017,871, 5,968,881, 5,962,386, 5,939,373, 5,914,307,5,902,781, 5,705,464, 5,703,034, 5,703,030, 5,679,630, 5,597,936,5,581,005, 5,559,261, 4,515,705, 5,169,552, and 4,714,562. Liquidlaundry detergents which can use the present invention include thosesystems described in U.S. Pat. Nos. 5,929,022, 5,916,862, 5,731,278,5,565,145, 5,470,507, 5,466,802, 5,460,752, 5,458,810, 5,458,809,5,288,431,5,194,639, 4,968,451, 4,597,898, 4,561,998, 4,550,862,4,537,707, 4,537,706, 4,515,705, 4,446,042, and 4,318,818. Shampoo andconditioners that can employ the present invention include U.S. Pat.Nos. 6,162,423, 5,968,286, 5,935561, 5,932,203, 5,837,661, 5,776,443,5,756,436, 5,661,118, 5,618,523, 5,275,755, 5,085,857, 4,673,568,4,387,090, 4,705,681.

[0062] We have discovered that the present invention is advantageouslyapplied to products, including fabric rinse conditioners, having a pH ofless than 7, preferably less than about 5 and most preferably less thanabout 4.

[0063] A better product, including wash-off products such as fabricrinse conditioner is also obtained when the salt level is limited. Theimprovement in the fabric rinse conditioner is noted by a longer lastingand/or improved delivery of fragrance. One method of improving thedelivery of the encapsulated fragrance is to limit the amount of salt inthe product base. Preferably the level of salt in the rinse conditionerproduct is less than or equal to about 1 weight percent by weigh in theproduct, preferably less than about 0.5 weight percent and mostpreferably less than about 0.1 weight percent.

[0064] More specifically we have discovered that limiting the level ofcalcium chloride will improve the delivery of the fragrance using theencapsulated fragrance of the present invention. Improved fragrancedelivery is provided by limiting the amount of calcium chloride to lessthan about 2 weight percent, typically less than 1 weight percent andmore preferably less than 0.5 weight percent. As it is known in the art,calcium chloride is added to control viscosity of the formulations, sothere is trade-off between the viscosity and fragrance delivery. We havediscovered that limiting the level of calcium chloride level as setforth above is particularly advantageous in fabric rinse conditionerproducts.

[0065] Another means for improving the performance of delivery of theencapsulated fragrance of the present invention is to limit the level ofsome softening agents. We have discovered that limiting the softeningactives, such as triethanolamine quaternary, diethanolamine quaternary,ACCOSOFT cationic surfactants (Stepan Chemical), or ditallow dimethylammonium chloride (DTDMAC), to an amount of from about 5 to about 40weight percent of the product, preferably from about 10 to about 30 andmore preferably from about 5 to 15 weight percent of a fabric rinseconditioner product will improve the performance of the fragrance. Theabove softening agents are well known in the art and are disclosed inU.S. Pat. Nos. 6,521,589 and 6,180594.

[0066] Yet another means for improving fragrance delivery of the presentinvention is to limit the level of the non-ionic surfactants employed inthe product, including a fabric softening product. Many non-ionicsurfactants are known in the art and include alkyl ethoxylate,commercially available as NEODOL (Shell Oil Company), nonyl phenolethoxylate, TWEEN surfactants (ICI. Americas Inc.), and the like. Wehave discovered that the encapsulated fragrance of the present inventionare advantageously used when the non-ionic surfactant level is belowabout 5 weight percent of the product, preferably less than about 1weight percent and most preferably less than 0.5 weight percent.

[0067] Yet another means for enhancing the fabric softener product is tolimit the level of co- solvent included in the fabric softener inaddition to water. Reducing the level of co solvents such as ethanol andisopropanol to less than about 5 weight percent of the product,preferably less than about 2 and most preferably less than about 1weight percent of the fabric softener product has been found to improvefragrance delivery.

[0068] Improved fragrance performance includes longer lasting fragrance,improved substantivity of the fragrance on cloth or the ability toprovide improved fragrance notes, such as specific fragrance notesthrough the use of the present invention.

[0069] While the above description is primarily to fabric rinseconditioner products, additional studies for shampoos, detergent andother cleaning products have also led to preferred embodiments for theseproducts as well.

[0070] As was found for fabric rinse conditioners, additional studieshave determined that lower pH is desirable for the delivery of fragrancewhen used in the product base. The preferred bases are neutral or mildlyacidic, preferably having a pH of 7, more preferably less than about 5and most preferably less than about 4 for shampoos, detergent and othercleaning products.

[0071] We have found that powder detergent and other cleaning productsprovide enhanced fragrance delivery when the material coating theencapsulating polymer is also neutral or slightly acidic. Preferredmaterials are NaHSO4, acetic acid, citric acid and other similar acidicmaterials and their mixtures. These materials have a pH of less thanabout 7, preferably less than about 5 and most preferably less thanabout 4.

[0072] As was described with fabric rinse conditioners, lower surfactantlevels were advantageously employed in shampoos, detergents and othercleaning products bases with the present invention. The level ofsurfactant is preferably less than about 30, more preferably less thanabout 20 and most preferably less than about 10 weight percent of theproduct base. A similar finding was found with preferred levels of saltin shampoos, detergents and other cleaning products as was found infabric rinse conditioners. The salt level is preferably less than about5 weight percent, more preferably less than about 2 and most preferablyless than 0.5 weight percent of the product.

[0073] Lower solvent levels found in the base improves the fragrancedelivery in shampoos, detergents and other cleaning products as well.Solvents, include but are not limited to, ethanol, isopropanol,dipropylene glycol in addition to the water base and the hydrotope levelis preferably less than 5 weight percent, preferably less than about 2and most preferably less than 1 weight percent of the total productbase.

[0074] A preferred surfactant base for shampoos, detergents and othercleaning products was found to be ethoxylated surfactants such as alkylethoxylated sulfates, (C₁₂-C₁₄) (ethylene oxide)nSO₄M; or ethoxylatedcarboxylate surfactants (C₁₂-C₁₄)(Ethylene oxide)nCOOM where n is from 1to about 50 and M is Na⁺, K⁺ or NH4⁺ cation. Other preferred anionicsurfactants are alkoyl isthionates such as sodium cocoly isthionate,taurides, alpha olefin sulphonates (i.e., Bioterge, Stepan Corporation),sulfosuccinates, such as Standapol SH-100 (Cognis) and disodium laurethsulfosuccinate (Stepan Mild SL3-BA, Stepan Corporation). A morepreferred class of surfactants for use in the present invention waszwitterionic surfactants such as the alkyl amine oxides, amidealkylhydroxysultaines like amidopropyl hydroxyl sultaine (Amphosol CS-50,Stepan Corporation), amphoacetates, such as sodium cocamphoacetate(Amphosol IC, Stepan Corporation), betaines and sulfobetaines.Zwitterionic surfactants are disclosed in greater detail in U.S. Pat.No. 6,569,826. Other commercially available surfactants are AMPHOSOLseries of betaines (Stepan Chemical); TEGOTIAN by Goldschmidt; andHOSTAPAN and ARKOPAN by Clariant

[0075] The most preferred surfactant system to be employed with theencapsulated fragrance system of the present invention was found to benon-ionic surfactants. Nonionic surfactants that may be used include theprimary and secondary alcohol ethoxylates, especially the C₈-C₂₀aliphatic alcohols ethoxylated with an average of from 1 to 50 moles ofethylene oxide per mole of alcohol, and more especially the C₁₀-C₁₅primary and secondary aliphatic alcohols ethoxylated with an average offrom 1 to 10 moles of ethylene oxide per mole of alcohol. Otherethoxylated nonionic surfactants that are suitable are polyethyleneglycol (MW=200-6000) esters of fatty acids, ethylene oxide-propyleneoxide-butylene oxide block copolymers such as the Pluronic and Tetronicpolymers made by BASF and ethoxylated alkanolamides such as, PEG-6cocamide (Ninol C-5, Stepan Corporation). Non-ethoxylated nonionicsurfactants include alkylpolyglycosides, glycerol monoethers,polyhydroxyamides (glucamide), polyglycerol fatty acid esters, alkylpyrrolidone-based surfactants (Surfadone LP-100 and LP300, ISPCorporation), dialkyl phthalic acid amides (distearyl phthalic acidamide or Stepan SAB-2 by Stepan Corporation), alkyl alkanolamides, suchas Laureth Diethanolamide (Ninol 30-LL, Stepan Corporation). Thesenonionic surfactants are disclosed in U.S. Pat. No. 6,517,588.

[0076] In addition, Gemini surfactants can be used, such as the Geminipolyhydroxy fatty acid amides disclosed in U.S. Pat. No. 5,534,197.Furthermore, structured liquids can be used that contain lamellarvesicles or lamellar droplets, as disclosed in WO 9712022 A, WO 9712027A1, 5,160,655, and 5,776,883.

[0077] Polymers that are known as deposition aids, and in a preferredembodiment are also cationic can be found in the following resources:

[0078] The rinse-off products that are advantageously used with thepolymer encapsulated fragrance of the present invention include laundrydetergents, fabric softeners, bleaches, brighteners, personal careproducts such as shampoos, rinses, creams, body washes and the like.These may be liquids, solids, pastes, or gels, of any physical form.Also included in the use of the encapsulated fragrance are applicationswhere a second active ingredient is included to provide additionalbenefits for an application. The additional beneficial ingredientsinclude fabric softening ingredients, skin moisturizers, sunscreen,insect repellent and other ingredients as may be helpful in a givenapplication. Also included are the beneficial agents alone, that iswithout the fragrance.

[0079] While the preferred coating materials may be simply dissolved inwater and mixed with a suspension of capsules prior to addition to thefinal product, other modes of coating use and application are alsopossible. These modes include drying the coating solution in combinationwith the capsule suspension for use in dry products such as detergents,or using higher concentrations of coating such that a gel structure isformed, or combining the coating material with other polymers oradjuvants which serve to improve physical characteristics or basecompatibility. Drying or reducing the water content of the capsulesuspension prior to coating addition is also possible, and may bepreferable when using some coating materials. Further, when using somecoating materials it is possible to add the coating to the applicationbase separately from the encapsulated fragrance.

[0080] Solvents or co-solvents other than water may also be employedwith the coating materials. Solvents that can be employed here are (i)polyols, such as ethylene glycol, propylene glycol, glycerol, and thelike, (ii) highly polar organic solvents such as pyrrolidine, acetamide,ethylene diamine, piperazine, and the like, (iii)humectants/plasticizers for polar polymers such as monosaccharides(glucose, sucrose, etc.), amino acids, ureas and hydroxyethyl modifiedureas, and the like, (iv) plasticizers for less polar polymers, such asdiisodecyl adipate (DIDA), phthalate esters, and the like.

[0081] Rheology modifiers should be selected carefully to insurecompatibility with the deposition agents. Preferred are nonionic,cationic and amphoteric thickeners, such as modified polysaccharides(starch, guar, celluloses), polyethylene imine (Lupasol WF, BASFCorporation), acrylates (Structure Plus, National Starch and ChemicalCompany) and cationic silicones.

[0082] The coating polymer(s) may also be added to a suspension ofcapsules that contain reactive components such that the coating becomeschemically (covalently) grafted to the capsule wall, or the coatingpolymer(s) may be added during the crosslinking stage of the capsulewall such that covalent partial grafting of the coating takes place.

[0083] The present invention also includes the.incorporation of asilicone or a siloxane material into a product that containsencapsulated fragrances of the present invention. As used hereinsilicone is meant to include both silicone and siloxane materials. Alsoincluded in the definition of silicone materials are the cationic andquaternized of the silicones. These materials are well known in the artand include both linear and branched polymers.

[0084] In addition to silicones, the present invention also includes theuse of mineral oils, triglyceride oils, polyglycerol fatty acid estersand sucrose polyester materials in a similar matter as the siliconematerials. For brevity, these materials are understood to be included inthe term silicone as used in this specification unless noted to thecontrary. Those with skill in the art will also appreciate that it ispossible to incorporate a silicone in combination with mineral oils andthe like in carrying out the present invention.

[0085] The silicone material is preferably admixed to the encapsulatedfragrance-containing product after the fragrance materials areencapsulated. Optionally, the silicone material may be mixed directlywith the product base either before or after the encapsulated fragrancehas been added.

[0086] Suitable silicone materials include amodiemthicone,polymethylalkyl siloxanes, polydimethylalkyl siloxanes, dimethicone,dimethicone copolyol, dimethiconol, disiloxane, cyclohexasiloxane,cyclomethicone, cyclopentasiloxane, phenyl dimethicone, phenyltrimethicone, silicone quaternarary materials including siliconequaternium-8, and silicone quaternium-12,trimethylsiloxyamidodimethicone, trimethylsiloxysilicate and the like.These materials are commercially well known materials and are availablefrom suppliers such as Dow Corning, Shin-Etsu, Wacker SiliconesCorporation and the like. The preferred silicon is Dow Corning 245 Fluid(Dow Corning, Midland Michigan), which is described as containinggreater than about 60 weight percent decamethylcyclopentasiloxane andless than or equal to about 4 weight percent dimethylcyclosiloxanes.

[0087] Amino functional silicone oils such as those described in U.S.Pat. Nos. 6,355,234 and 6,436,383 may also be used in the presentinvention.

[0088] Preferably the silicone materials of the present invention have amolecular weight (Mw) of from about 100 to about 200,000, preferablyfrom about 200 to about 100,00 and most preferably from about 300 toabout 50,000.

[0089] The viscosity of the silicone materials is typically from 0.5 toabout 25, preferably from about 1 to about 15 and most preferably fromabout 2 to about 10 millimeters² sec-1 using the Corporate Test Methodas described in the Dow Corning product brochures.

[0090] The level of silicone used in the present invention varies byproduct, but is typically less than 10 percent by weight, typically fromabout 0.5 to about 8 weight percent of the total weight of product.Preferably the silicon level is from about 2 to about 6 and mostpreferably from about 3 to about 5 weight percent of the total weight ofthe product.

[0091] The silicon fluid can be added to a wide array of products inorder to enhance the delivery of fragrance. Suitable products includefabric conditioners and detergents, personal care products such asshampoos, liquid soap, body washes and the like; as well as inapplications such as fine fragrances and colognes.

[0092] For example, a representative formulation for a fabric softenerrinse product would include the following materials:

[0093] cationic quaternary ammonium softeners from about 3 to about 30weight percent;

[0094] the encapsulated fragrance product of the present invention fromabout 0.1 to about 5 weight percent; and

[0095] a silicone oil form about 1 to about 10 weight percent.

[0096] The remainder of the fabric softener product may additionallycontain, without limitation, brighteners, dispersibility aids,surfactants, stabilizers, soil release agents and water.

[0097] Without wishing to be bound by any theory it is believed that thesilicone fluid prevents the encapsulated fragrance material fromleaching from the capsule. Although the encapsulation materials areprovided to prevent the loss of fragrance before usage, it is believedthat the surfactants found in detergents, fabric conditioners, shampoosand other wash-off products over time leach some of the fragrance fromthe capsule during storage and before use. The addition of the siliconefluids to the fragrance-containing capsule materials is believed to coatthe encapsulation materials with a layer of silicone that prevents theleaching of the fragrance. Another rationale for the improvement of thedelivery of fragrance by the addition of silicone oils is that the oilsfill vesicles in the product base. The product base such as a detergent,contains high levels of surfactant, and it is theorized that the highlevel of surfactant in the product bases over time removes the fragrancefrom the capsule. The addition of silicone to the slurry containing theencapsulated fragrance is theorized to slow the leaching of thefragrance by the surfactant, thereby providing additional and longerlasting fragrance to be delivered over time.

[0098] In another embodiment of the present invention, we havediscovered that the cationic coating is not required and that theinclusion of silicon in the encapsulated mixture can providesatisfactory performance in the delivery of the fragrance. In thisembodiment of the invention, the fragrance is encapsulated by thepolymeric materials described above, and the level of silicon describedabove is provided to the encapsulated fragrance.

[0099] More specifically the present invention is directed to acomposition comprising a fragrance material, said fragrance materialencapsulated by a polymer to provide a polymer encapsulated fragrance,said polymer encapsulated fragrance further provided with a siliconematerial. This embodiment differs from other embodiments of the presentinvention in that the cationic polymer is not provided. The silicone oilis provided without a cationic polymer present. A description of thesuitable silicone oils is provided above as well as the level of thesilicon oil that is used.

[0100] The mixture mentioned above can be provided into a wide range ofproducts, including rinse-off products including but not limited tofabric rinse conditioners, detergents, shampoos, body washes, and othercleaning products.

[0101] A preferred embodiment of the present invention is exemplified bythe following formulation:

[0102] cationic quaternary ammonia softeners from about 3 to about 30weight percent;

[0103] polymer encapsulated capsules containing fragrance from about 0.1to about 5 weight percent; and

[0104] silicone oils from about 1 to about 10 weight percent.

[0105] The remainder of the formulation comprises water, bleachingagents, stain removers, and other ingredients known to those with skillin the art.

[0106] Further, if stability of the capsule and coating system iscompromised by inclusion in the product base, product forms whichseparate the bulk of the base from the fragrance composition may beemployed. The cationic coated polymer particles of the present inventionmay be provided in solid and liquid forms depending on the othermaterials to be used. In order to provide the cationic coated polymer ina dry form, it is preferable that the materials be dried using dryingtechniques well known in the art. In a preferred embodiment thematerials are spray dried at the appropriate conditions. The spray driedparticles may also be sized to provide for consistent particle size andparticle size distribution. One application in which it would beadvantageous to include dry particles of the present invention would beincorporated in a powdered laundry detergent. Alternatively wetcapsule-coating slurries may be absorbed onto suitable dry powders toyield a flowable solid suitable for dry product use.

[0107] The mechanism of action of the present invention is notcompletely understood at this time. It is thought that the cationicpolymer solution coats and associates with the. polymeric capsules, thusimparting a positive charge which interacts with either the base orsubstrate in such a way as to substantially improve capsule depositionto the substrate surface.

[0108] It should be noted that the cationic character of the polymercoating used is not sufficient to determine whether it is functionalwith regard to improving capsule or particle deposition. Without wishingto be bound by theory, it is hypothesized that while cationic chargeprovides an affinity to the normally anionic substrates of interest(i.e., hair, skin, and cloth), other physical characteristics of thepolymer are also important to functionality. Additionally, interactionsbetween the capsule or particle surface, base ingredients, and thecoating polymer are thought to be important to improving deposition to agiven substrate.

[0109] Use of the coating systems described below allows for moreefficient deposition of capsules, particles, and dispersed droplets thatare coated by the cationically charged polymer. Without wishing to bebound by any theory it is believed that the advantages of the presentinvention is created by the combination of the cationically chargedcoating which is helpful in adhering to the substrate to which theproduct is applied with a capsule or particle containing fragrance. Oncethe encapsulated particle is adhered to the substrate we have found thatthe encapsulated fragrance can be delivered by the fracturing orcompromising of the polymer coating by actions such as brushing hair,movement of the fabric, brushing of the skin etc.

[0110] One measurement of the enhancement of the present invention indelivering the fragrance and other ingredients of the present inventionis done by headspace analysis. Headspace analysis can provide a measureof the fragrance material contained on the desired substrate provided bythe present invention. The present invention will provide a much higherlevel of fragrance on the substrate compared to the amount of fragrancedeposited on the substrate by conventional means. As demonstrated by thefollowing examples, the present invention can deliver more than abouttwice the level of fragrance to a substrate than common approaches,preferably more than about three times the level of fragrance andpreferably more than about five times the level of fragrance thantraditional approaches.

[0111] For example, this may be determined by measuring the level offragrance imparted to a test hair swatch containing fragrance in ashampoo by conventional means as compared to the level of fragranceimparted by the present invention. The same fragrance should be usedand. similar test hair pieces should be washed in a similar manner.After brushing to release the fragrance from the hair, the level offragrance on the test hair swatches of the control and the fragrance ofthe present invention could be measured by headspace analysis. Due tothe superior adhesion of fragrance to hair by the present invention, theheadspace analysis of the respective samples will demonstrate animproved level of fragrance as compared to fragrance applied byconventional means.

[0112] To better control and measure the fragrance release upon brushingor rubbing from a substrate (i.e., hair or cotton cloth), a fixed-weightof the washed and dried substrate will be placed in a custom-made glassvessel containing SILCOSTEEL (Resteck Corp., Bellefont, Pa.) treatedsteel ball bearings. Headspace will be collected from the vessel using aTenax trap (Supelco, Inc., Bellafonte, Pa.) upon equilibration. A secondheadspace will be collected after the substrate-containing vessel isshaken along with the steel beads on a flat bed shaker for 20 minutes.Fragrance present in the headspace from unshaken and shaken substratesand subsequently absorbed in the Tenax traps is desorbed through aGerstel thermal desorption system (Gersteel, Inc., Baltimore, Md.).Desorbed fragrance volatiles are injected into a gas chromatograph(Hewlett-Packard, Model Agilent 6890) equipped with a flame ionizationdetector. Area counts of individual fragrance components, identifiedbased on the retention time, are then collected and analyzed.

[0113] These and additional modifications and improvements of thepresent invention may also be apparent to those with ordinary skill inthe art. The particular combinations of elements described andillustrated herein are intended only to represent only a certainembodiment of the present invention and are not intended to serve aslimitations of alternative articles within the spirit and scope of theinvention. All materials are reported in weight percent unless notedotherwise. As used herein all percentages are understood to be weightpercent.

[0114] All U.S. Patents and patent applications cited herein areincorporated by reference as if set forth in their entirety.

EXAMPLE 1 Preparatiqn of Fragrance

[0115] The following ingredients were mixed to formulate the fragrancethat was used in the following examples. Unless noted to the contraryall ingredients are available from International Flavors & FragrancesInc., N.Y., N.Y., known to those with skill in the art as IFF.Ingredients Parts by weight Ethyl-2-methyl valerate 7.143 Limonene 7.143Dihyro myrcenol 7.143 Phenyl ethyl alcohol 7.143 Benzyl acetate 7.143Dimethyl benzyl carbonate acetate 7.143 Methyl nonyl acetaldehyde 7.143CYCLACET (IFF) 7.143 LILIAL (Givaudan) 7.143 Hexyl salicylate 7.143Tonalid 7.143 Geraniol 7.143 Methoxy naphthalene 7.143 Beta ionone 7.143

EXAMPLE 2 Preparation of Cationic Polymer-Coated Capsules

[0116] Individual polymer solutions were prepared by mixing selectedcationic polymers at 5% by weight in 50° C. warm water until fullydissolved under constant stirring. Cationic polymers used in thisexample are the following: cationic starch (HI-CAT CWS42 from RoquetteAmerica Inc.), cationic guar (Jaguar C-162 from Rhodia Inc.), Luviquat(HM550 and PQ11-PN from BASF Aktengesellschaft Inc.), Abil Quat (3474from Degussa Goldschmidt Chemical Corp.), and CelQuat (L-200 fromNational Starch In.).

[0117] Cationic polymer-coated capsules were prepared by mixing uncoatedfragrance-containing capsules and the polymer solution specified aboveat the level of desire. In this example, melamine-formaldehyde capsuleslurry (uncoated capsules made by Cellessence International Ltd., WestMolesey, Surrey, UK) that contains approximately 32% by weight of thefragrance and 57% by weight of water was used. To make the capsuleslurry, a copolymer of poly acrylamide and acrylic acid was firstdispersed in water together with a methylated melamine-formaldehyderesin. Fragrance was then added into the solution with high speedshearing to form small droplets. Curing of the polymeric film over thefragrance droplets as capsule wall effected by increasing the solutionpH to polymerize the polymers followed by heating the solution to 50 to85° C. To prepare cationic capsule slurry that contains cationicpolymers at 63% by weight of the fragrance, 2.84 grams of the polymersolution was mixed with 0.7 grams of the capsule slurry untilhomogeneous.

[0118] Three different cationic capsule slurries were prepared usingcationic starch (HI-CAT CWS42) at 10%, 30%, and 63% by weight of thefragrance. In the same manner, three additional cationic capsuleslurries were prepared using cationic guar (Jaguar C-162) at 63%, 120%,and 300% by weight of the fragrance. Other polymers (Luviquat, AbilQuat, and Cel Quat) were used at 63% by weight of the fragrance.

EXAMPLE 3 Preparation of Control Fragrance- and Bare Capsules-ContainingShampoo for Hair Swatch Washing

[0119] The control shampoo was prepared by mixing the neat fragrance at0.75% by weight in 30 grams of model shampoo base for 5 minutes. Shampoothat contained bare capsules without a cationic coating was prepared thesame way by mixing the melamine-formaldehyde capsule slurry in shampooto obtain 0.75% by weight fragrance. The resulting fragrance- orcapsules-containing shampoo was added into 570 grams of 40° C. warmwater and mixed for 2 minutes. Four virgin hair swatches (approximately2.5 grams each) were added into the warm wash liquor and shaken foranother 2 minutes in a 40° C. water bath. Swatches were taken out fromthe wash liquor and rinsed sequentially in three glass jars that eachcontained 600 grams of clean warm water. Washing and rinsing wererepeated once and excess water from hair was removed. Hair swatches wereline-dried for 24 hours followed by sensory evaluation and analyticalheadspace analysis.

EXAMPLE 4 Preparation of Cationic Capsules-Containing Shampoo for HairSwatch Washing

[0120] Cationic polymer-coated capsules prepared according to Example 2were used to mix in 30 grams of model shampoo base to obtain a fragrancelevel of 0.75% by weight. The resulting shampoo was used to wash fourvirgin hair swatches according to the procedures described in Example 3.Hair swatches were line-dried for 24 hours followed by sensoryevaluation and analytical headspace analysis.

EXAMPLE 5 Sensory Evaluation and Headspace Analysis of Hair Swatches

[0121] Dry hair swatches were evaluated by a panel of four people usingthe intensity scale of 0 to 5, where 0=none, 1=weak, 2=moderate,3=strong, 4=very strong, and 5=extremely strong. Sensory scores wererecorded before and after hair swatches were rubbed by hand. Depositionand. release of fragrance and capsules were assessed using thepurge-and-trap method followed by GC analyses on 5.0 grams of dry hairswatches before and after shaking with steel beads in enclosed vessels.Averaged sensory scores and total headspace area counts of the variablestested were reported in the following. The comment in the Table below“Encapsulated fragrance coated with cationic starch (63% fragrance)”means that the cationic starch level is 63% of the amount of fragrance.Sensory Score Sensory Score Hair Swatch Variable (Before Rubbing) (AfterRubbing) Neat fragrance 1.7 2.0 Encapsulated fragrance 2.0 2.0 withoutcationic polymer Encapsulated fragrance 3.3 5.0 coated with cationicstarch (63% fragrance) Encapsulated fragrance 3.7 5.0 coated withcationic starch (30% fragrance) Encapsulated fragrance 3.0 4.7 coatedwith cationic starch (10% fragrance) Encapsulated fragrance 4.0 5.0coated with cationic guar (300% fragrance) Encapsulated fragrance 2.34.7 coated with cationic guar (120% fragrance) Encapsulated fragrance2.3 2.3 coated with cationic guar (63% fragrance) Encapsulated fragrance1.3 1.6 coated with Luviquat HM552/PQ11-PN (63% fragrance) Encapsulatedfragrance 1.3 1.6 coated with Abil Quat 3474 (63% fragrance)Encapsulated fragrance 1.3 1.3 coated with CelQuat L- 200 (63%fragrance)

[0122] Encapsulated Fragrance Without Neat Fragrance Cationic PolymerChemical Unshaken Shaken Unshaken Shaken Ethyl-2-methyl 278 681 117 676valerate Limonene 2,081 4,157 765 2,527 Dihydro myrcenol 5 61 4 99Phenyl ethyl 18 67 27 225 alcohol Benzyl acetate 16 71 13 55 Geraniol 00 0 0 Dimethyl benzyl 9 181 5 88 carbonate acetate Methyl nonyl 25 313 576 acetaldehyde CYCLACET (IFF) 10 139 74 66 Methoxy 21 76 9 72naphthalene Beta ionone 0 24 0 12 LILIAL (Givaudan) 0 25 68 117 Hexylsalicylate 0 9 3 5 Tonalid 0 0 0 0 Fragrance Total 2,463 5,804 1,0904,018 Area Count

[0123] Encapsulated Encapsulated Encapsulated Fragrance Coated FragranceCoated Fragrance Coated with Cationic with Cationic with Cationic starchStarch (30% Starch (10% (63% Fragrance) Fragrance) Fragrance) ChemicalUnshaken Shaken Unshaken Shaken Unshaken Shaken Ethyl-2-methyl 1,25327,877 998 23,570 1,071 26,914 valerate Limonene 10,585 195,482 9,111193,141 3,130 63,419 Dihydro myrcenol 292 20,634 92 11,864 198 12,282Phenyl ethyl 67 333 21 165 32 164 alcohol Benzyl acetate 0 146 9 135 678 Geraniol 0 123 0 40 0 70 Dimethyl benzyl 385 14,408 141 10,420 1125,393 carbonate acetate Methyl nonyl 256 12,308 122 8,583 54 2,857acetaldehyde CYCLACET (IFF) 177 9,180 89 6,167 56 2,804 Methoxy 41 83121 492 20 506 naphthalene Beta ionone 32 4,161 14 2,889 7 920 LILIAL(Givaudan) 27 2,517 10 1,743 4 509 Hexyl salicylate 9 412 3 304 0 63Tonalid 0 33 0 27 0 7 Fragrance Total 13,124 288,445 10,631 259,5404,690. 115,986 Area Count

[0124] Encapsulated Encapsulated Fragrance Coated Fragrance CoatedEncapsulated with Cationic with Cationic Fragrance Coated Guar (300%Guar (120% with Cationic Guar Fragrance) Fragrance) (63% Fragrance)Chemical Unshaken Shaken Unshaken Shaken Unshaken Shaken Ethyl-2-methyl2,573 29,873 868 15,973 243 2,726 valerate Limonene 11,164 123,014 5,095129,185 1,636 27,218 Dihydro myrcenol 380 10,903 142 10,319 24 1,675Phenyl ethyl 31 97 46 188 53 239 alcohol Benzyl acetate 60 373 15 105 060 Geraniol 9 272 0 126 0 8 Dimethyl benzyl 459 6,874 113 7,118 18 2,959carbonate acetate Methyl nonyl 358 6,760 82 5,753 18 2,108 acetaldehydeCYCLACET (IFF) 241 5,011 57 4,263 16 1,209 Methoxy 141 906 27 482 0 119naphthalene Beta ionone 44 2,459 12 2,171 6 421 LILIAL (Givaudan) 311,424 9 1,365 2 347 Hexyl salicylate 4 236 0 208 0 49 Tonalid 0 22 0 160 7 Fragrance Total 15,495 188,224 6,466 177,272 2,016 39,145 Area Count

[0125] These results demonstrated that the following: cationic starchand cationic guar were both superior to the other cationic polymerstested, a cationic starch was far more effective than cationic guar on asame weight basis in enhancing capsule deposition on hair. Data alsoshowed that capsule deposition was dependent on the concentration ofcationic polymers present in the capsule slurry. At the highest polymerconcentration of cationic starch tested (63% versus the amount offragrance), headspace area counts suggested a total fragrance depositionwas improved approximately 50-fold over the neat fragrance, i.e.,non-encapsulated fragrance. Headspace area counts of cationic guar at300% and 120% versus the amount of fragrance was found between those ofcationic starch at 30% and 10% versus the amount of fragrance, althoughsensory scores are very close to each other which can be explained bydose-response relationship.

[0126] The averaged nitrogen to carbon ratio (by weight) of testedcationic polymers was determined as the following: 0.022, 0.0061, 0.041,0.29, and 0.17 for Jaguar C-162, HI-CAT CWS42,. Cel Quat L-200, LuviquatHM552, and Luviquat PQ11-PN, respectively. It is evident that thecationic starch used in this example did not possess the highestcationic charge density, yet best performance was obtained through theenhanced capsule deposition on hair.

EXAMPLE 6 Preparation of Control Fragrance- and Bare Capsules-ContainingPowder Detergent for Fabric Swatch Washing

[0127] The control powder detergent was prepared by mixing the neatfragrance prepared in Example 1 above, at 0.3% by weight in 2.13 gramsof commercial powder detergent (unfraqranced TIDE, Procter & Gamble).Powder detergent that contained capsules without the cationic coatingwas prepared the same way by mixing melamine-formaldehyde capsule slurryin detergent to obtain 0.3% by weight fragrance. The resultingfragrance- or capsules-containing detergent was added into 1-liter waterin a separation glass funnel. Three terry cotton swatches (approximately2 grams each) were added into the wash liquor and shaken for 15 minutesbefore the wash liquor was drained from the bottom of each funnel.Excess water was removed from swatches by syringe and swatches wererinsed with 1-liter water for additional 5 minutes using the sameapparatus. Rinsing was repeated once before swatches were line-dried for24 hours followed by sensory evaluation and analytical headspaceanalysis.

EXAMPLE 7 Preparation of Cationic Capsules-Containing Powder Detergentfor Fabric Swatch Washing

[0128] Fragrance-containing capsules with a cationic coating wereprepared as described in Example 2 were used to mix in 2.13 grams ofcommercial powder TIDE to obtain a fragrance level of 0.3% by weight.The resulting detergent was used to wash three fabric swatches accordingto the procedures described in Example 6. Fabric swatches wereline-dried for 24 hours followed by sensory evaluation and analyticalheadspace analysis.

EXAMPLE 8 Sensory Evaluation and Headspace Analysis of Fabric SwatchesWashed with Powder Detergent

[0129] Dry fabric swatches were evaluated by a panel of four peopleusing the intensity scale of 0 to 5, where 0=none, 1=weak, 2=moderate,3=strong, 4=very strong, and 5=extremely strong. Sensory scores wererecorded before and after hair swatches were rubbed by hand. Depositionand release of fragrance and capsules were assessed using thepurge-and-trap method followed by gas chromatography analyses on two dryfabric swatches before and after shaking with steel beads in enclosedvessels. Averaged sensory scores and total headspace area counts of thethree variables tested were reported in the following: Sensory ScoreSensory Score Fabric Swatch Variable (Before Rubbing) (After Rubbing)Neat fragrance 1.0 0.0 Encapsulated fragrance 0.0 1.8 without cationicpolymer Cationic starch-coated 1.5 3.3 capsules (polymer at 100%fragrance)

[0130] Encapsulated Fragrance Coated Encapsulated With CationicFragrance Without Starch (100% Neat Fragrance Cationic PolymerFragrance) Chemical Unshaken Shaken Unshaken Shaken Unshaken ShakenEthyl-2-methyl 0 0 0 15 19 88 valerate Limonene 86 98 82 189 3,34357,411 Dihydro myrcenol 5 10 3 14 24 19 Phenyl ethyl 740 1,258 503 845685 1,557 alcohol Benzyl acetate 689 1,991 207 669 298 1,304 Geraniol 00 6 39 0 8 Dimethyl benzyl 4 6 3 4 47 2,224 carbonate acetate Methylnonyl 16 77 3 8 35 1,542 acetaldehyde CYCLACET (IFF) 7 11 7 11 8 14Methoxy 0 0 0 0 0 21 naphthalene Beta ionone 0 0 2 0 0 357 LILLIAL 0 104 8 4 235 (Givaudan) Hexyl salicylate 0 11 3 7 4 9 Tonalid 0 0 0 0 0 14Fragrance Total 1,547 3,472 823 1,809 4,467 64,803 Area Count

[0131] Sensory results showed that encapsulated fragrance materialsslightly improved fragrance perception over the neat fragrance,non-encapsulated, when used with the powder detergent. This slightintensity increase, however, was not supported by the gas chromatographyheadspace area counts, probably due to the low overall level ofcomponents. The use of cationic starch significantly improved thefragrance deposition on cotton swatches over both bare capsules and neatfragrance. These observations were fully supported by the headspace areacounts above swatches, both before and after stirred with steel beads.

EXAMPLE 9 Preparation of Control Fragrance- and Bare Capsules-ContainingFabric Softener for Fabric Swatch Washing

[0132] A control was prepared by mixing the neat fragrance at 1.0% byweight in 1.0 gram of liquid fabric softener. Four different fabricsoftener bases were used, which were commercial Downy fragrance-freefabric softener (Procter & Gamble), model fabric softeners #1 containing9 weight % softening surfactants, model fabric softener #2 containing 13weight percent softening surfactant, and model fabric softener #3containing 5 weight % softening surfactant. Fabric softener thatcontained capsules without cationic coating was prepared the same way bymixing the melamine-formaldehyde capsule slurry in fabric softener toobtain 1.0% by weight fragrance. The resulting fragrance- orcapsules-containing softener was added into 1-liter water in aseparation glass funnel. Three fabric cotton swatches (approximately 2grams each) were added into the wash liquor and stirred for 10 minutesbefore the wash liquor was drained from the bottom of each funnel.Excess water was removed from swatches by syringe and swatches wereline-dried for 24 hours followed by sensory evaluation and analyticalheadspace analysis.

EXAMPLE 10 Preparation of Cationic Capsules-Containing Fabric Softenerfor Fabric Swatch Washing

[0133] Fragrance-containing capsules coated with cationic starch wereprepared as described in Example 2 and were mixed in 1.0 gram of liquidfabric softener to obtain a fragrance level of 1.0% by weight. Theresulting fabric softener was used to wash three fabric swatchesaccording to the procedures described in Example 9. Fabric swatches wereline-dried for 24 hours followed by sensory evaluation and analyticalheadspace analysis.

EXAMPLE 11 Sensory Evaluation and Headspace Analysis of Fabric SwatchesWashed With Liquid Softener

[0134] Dry fabric swatches were evaluated by a panel of four peopleusing the intensity scale of 0 to 5, where 0=none, 1=weak, 2=moderate,3=strong, 4=very strong, and 5=extremely strong. Sensory scores wererecorded before and after fabric swatches were rubbed by hand.Deposition and release of fragrance and capsules were assessed using thepurge-and-trap method followed by GC analyses on two dry fabric swatchesbefore and after stirring with steel beads in enclosed vessels. P&G isunderstood to be Procter & Gamble Company of Cincinnati, Ohio. Averagedsensory scores and headspace area counts of the three variables testedwere reported in the following: Fabric Sensory Score Sensory ScoreFabric Swatch Variable Conditioner Base (Before Rubbing) (After Rubbing)Neat fragrance P&G DOWNY ULTRA 1.3 1.5 Encapsulated fragrance P&G DOWNYULTRA 1.2 2.0 without cationic polymer Encapsulated fragrance P&G DOWNYULTRA 1.2 2.2 coated with cationic starch (100% fragrance) Neatfragrance Simulated model 0.9 1.0 fabric softener product base 1Encapsulated fragrance Simulated model 2.3 3.5 without cationic fabricsoftener polymer product base 1 Encapsulated fragrance Simulated model3.2 4.8 coated with cationic fabric softener starch (100% fragrance)product base 1 Neat fragrance Simulated model 1.3 1.3 fabric softenerproduct base 2 Encapsulated fragrance Simulated model 1.8 3.2 withoutcationic fabric softener polymer product base 2 Encapsulated fragranceSimulated model 2.2 3.8 coated with cationic fabric softener starch(100% fragrance) product base 2 Neat fragrance Simulated model 1.8 2.3fabric softener product base 3 Encapsulated fragrance Simulated model1.8 3.0 without cationic fabric softener polymer product base 3Encapsulated fragrance Simulated model 2.5 4.5 coated with cationicfabric softener starch (100% fragrance) product base 3

[0135] Encapsulated Encapsulated Fragrance Coated Fragrance WithCationic Without Cationic Starch (100% Neat Fragrance Polymer Fragrance)Un- Un- Un- Chemical shaken Shaken shaken Shaken shaken ShakenCommercial P&G DOWNY Fabric Softener Ethyl-2- 14 21 195 2,038 452 2,935methyl valerate Limonene 32 63 8,456 81,512 15,907 91,289 Dihydro 18 12243 683 70 885 myrcenol Phenyl 0 0 0 117 33 127 ethyl alcohol Benzyl 71311 147 775 282 697 acetate Geraniol 0 0 0 10 0 19 Dimethyl 0 2 1374,146 243 3,470 benzyl carbonate acetate Methyl 3 50 77 1,975 181 2,044nonyl acetaldehyde CYCLACET 0 12 56 1,932 132 1,847 (IFF) Methoxy 0 25 568 10 70 naphthalene Beta ionone 0 4 5 600 23 527 LILIAL 0 26 3 261 26236 (Givaudan) Hexyl 0 39 0 148 7 103 salicylate Tonalid 0 8 0 19 0 10Fragrance 138 683 9,124 94,284 17,366 104,259 Total Area Count SIMULATEDMODEL FABRIC SOFTENER PRODUCT BASE 1 Ethyl-2- 0 0 552 8,325 2,354 27,508methyl valerate Limonene 59 84 6,792 92,094 16,087 182,103 Dihydro 41178 11 878 67 3,764 myrcenol Phenyl 0 0 0 0 0 141 ethyl alcohol Benzyl29 731 38 503 221 1,382 acetate Geraniol 0 0 0 5 0 6 Dimethyl 5 18 343,271 91 6,684 benzyl carbonate acetate Methyl 20 115 28 2,027 86 4,283nonyl acetaldehyde CYCLACET 0 16 12 1,580 49 3,732 (IFF) Methoxy 0 13 4139 23 329 naphthalene Beta ionone 10 51 0 359 4 1,215 LILIAL 0 28 0 2083 617 (Givaudan) Hexyl 0 42 0 65 0 216 salicylate Tonalid 0 10 0 10 0 22Fragrance 164 1,286 7,471 109,464 18,985 232,002 Total Area CountSIMULATED MODEL FABRIC SOFTENER PRODUCT BASE 2 Ethyl-2- 0 0 478 7,345510 9,360 methyl valerate Limonene 61 78 10,762 151,790 9,775 177,293Dihydro 33 52 22 1,766 29 2,017 myrcenol Phenyl 0 0 7 90 43 101 ethylalcohol Benzyl 342 1,696 208 2,627 725 5,019 acetate Geraniol 0 3 0 13 015 Dimethyl 4 12 29 5,987 40 6,347 benzyl carbonate acetate Methyl 19119 35 4,024 34 3,277 nonyl acetaldehyde CYCLACET 13 28 20 3,314 243,430 (IFF) Methoxy 0 25 0 149 4 115 naphthalene Beta ionone 19 53 21,107 0 994 LILIAL 51 454 0 608 0 425 (Givaudan) Hexyl 0 75 0 263 0 200salicylate Tonalid 0 21 0 37 0 21 Fragrance 542 2,612 11,563 179,12011,184 208,614 Total Area Count SIMULATED MODEL FABRIC SOFTENER PRODUCTBASE 3 Ethyl-2- 0 0 878 8,607 1,307 25,601 methyl valerate Limonene 4575 10,421 123,405 19,858 330,854 Dihydro 15 41 118 1,684 47 4,431myrcenol Phenyl ethyl 0 0 0 218 9 249 alcohol Benzyl 573 5,309 3,1477,987 127 1,070 acetate Geraniol 0 0 0 22 0 27 Dimethyl 0 9 217 4,854102 10,430 benzyl carbonate acetate Methyl 6 124 173 2,951 105 7,410nonyl acetaldehyde CYCLACET 0 12 122 2,599 52 6,724 (IFF) Methoxy 0 8 13119 7 304 naphthalene Beta ionone 0 4 16 886 4 2,301 LILIAL 0 34 10 4563 1,215 (Givaudan) Hexyl 0 44 0 191 0 518 salicylate Tonalid 0 13 0 24 068 Fragrance 639 5,673 15,115 154,003 21,621 391,202 Total Area Count

[0136] Sensory data indicated that cationic starch improved capsuledeposition in all tested rinse conditioners. The specific basecomposition is a factor that influences deposition and the magnitude ofperceived sensory. Analytical headspace area counts confirmed thisobservation.

What is claimed is:
 1. A composition comprising: a fragrance material;said fragrance material encapsulated by a polymer to provide a polymerencapsulated fragrance; the polymer encapsulated fragrance is furthercoated by a cationic polymer.
 2. The composition of claim 1 wherein thefragrance is a liquid thereby providing a liquid core to the polymerencapsulated fragrance.
 3. The fragrance of claim 1 wherein thefragrance material is not water soluble.
 4. The composition of claim 1wherein the fragrance material is from about 10 to about 50 weightpercent of the composition.
 5. The composition of claim 1 which isincorporated into a product selected from the group consisting of apersonal care, fabric care and cleaning products.
 6. The composition ofclaim 5 wherein the personal care product is selected from the groupconsisting of hair shampoos, hair rinses, bar soaps, and body washes. 7.A method for imparting an olfactory effective amount of fragrance into awash-off product comprising: providing a fragrance material;encapsulating the fragrance material with a polymer to form a polymerencapsulated fragrance; providing a cationic polymer to the surface ofthe polymer encapsulated fragrance to form a cationically coated polymerencapsulated material; and providing the cationically coated polymerencapsulated material to a rinse off product.
 8. The method of claim 7wherein the encapsulating polymer is selected from a vinyl polymer; anacrylate polymer, melamine-formaldehyde; urea formaldehyde and mixturesthereof.
 9. The method of claim 7 wherein the cationic polymer isselected from polysaccharides, cationically modified starch andcationically modified guar, polysiloxanes, poly diallyl dimethylammonium halides, copolymers of poly diallyl dimethyl ammonium chlorideand vinyl pyrrolidone, acrylamides, imidazoles, imidazolinium halidesand imidazolium halides and poly vinyl amine and its copolymers withN-vinyl formamide.
 10. The method of claim. 9 wherein the cationicpolymer is selected from a cationically modified starch and cationicallymodified guar.
 11. A wash-off product comprising an olfactory effectiveamount of the compound of claim
 1. 12. The wash-off product of claim 11wherein the wash-off product is selected from the group consisting ofpersonal care, fabric care and cleaning products.
 13. A wash-off productcomprising the composition of claim 1 and a silicone material.
 14. Thewash-off product of claim 13 wherein the wash-off product is a fabricrinse conditioner.
 15. The wash-off product of claim 14 having asurfactant level of from about 5 to about 30 weight percent.
 16. Thewash-off product of claim 14 having a calcium chloride level less than0.5 weight percent.
 17. The wash-off product of claim 13 wherein thesilicone level is from about 0.5 to 8 weight percent.
 18. The wash-offproduct of claim 17 which is a fabric rinse conditioner.
 19. Thewash-off product of claim 12 wherein the softening agent is provided ata level of from about 5 to about 30 weight percent.